flash RT-Thread Nano

5 RT-THREAD Nano FLASH擦除

发布于 2021-11-18 14:49:13 浏览：928 订阅该版

使用stm32cubemx移植rt-thread nano，在线程中使用HAL库的FLASH擦除函数，线程无法进行下去。
```c
 void led_thread_entry(void *parameter)
{
	while(1)
	{
		rt_sem_take(&sem1,RT_WAITING_FOREVER);
		rt_thread_mdelay(500);
		HAL_GPIO_TogglePin(GPIOC,GPIO_PIN_13);
		getrecv(recv_buff,data_buff, sizeof(recv_buff));
		rt_thread_mdelay(500);
		Flash_ErasePages(ADDR, NUM);						//擦除flash	
		Flash_Write32(ADDR, data_buff, DATA_SAVE_BUFF_LEN);
		rt_sem_release(&sem2);
	}
}
```
擦除函数：
```c
void Flash_ErasePages(uint32_t faddr,uint32_t fdataNum)
{
	if(fdataNum == 0||faddr>FLASH_ADDR_MAX)
	{
		return;
	}
	uint32_t PageError = 0;
	HAL_FLASH_Unlock();
	FLASH_EraseInitTypeDef FLASH_EraseInitSturcture;
	__HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_ALL_ERRORS);
	
	FLASH_EraseInitSturcture.TypeErase = FLASH_TYPEERASE_PAGES;
	FLASH_EraseInitSturcture.Banks = Flash_GetBank(faddr);
	FLASH_EraseInitSturcture.Page = Flash_GetPage(faddr);
	FLASH_EraseInitSturcture.NbPages = Flash_GetPage(faddr + 4 * fdataNum - 1) - FLASH_EraseInitSturcture.Page + 1;
	
	if(HAL_FLASHEx_Erase(&FLASH_EraseInitSturcture,&PageError) != HAL_OK) 
	{
		HAL_FLASH_Lock();
		return;
	}
}
```
写函数：
```c
void Flash_Write32(uint32_t faddr,uint32_t *fdata32, uint32_t fdata32Num)
{
	uint64_t fdata64;
	HAL_FLASH_Unlock();																		//解锁FLASH
	if(faddr<FLASH_ADDR_MAX)																	//写入数据地址小于STM32L431RC的flash地址最大值
	{
		for (uint32_t i = 0; i < fdata32Num / 2; i++) 
		{
			fdata64 = *(uint64_t*)fdata32;
			if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, faddr, fdata64) != HAL_OK) 			
			{																									//如果出现错误
				HAL_FLASH_Lock(); 															//锁定FLASH
				return;
			}
			faddr += 8;
			fdata32 += 2;
		}
		if ((fdata32Num & 0x01) == 1) 
		{
			uint64_t fdata64 = *(uint64_t*)faddr;
			fdata64 = (fdata64 & 0xffffffff00000000uL) | (*fdata32);
			if (HAL_FLASH_Program(FLASH_TYPEPROGRAM_DOUBLEWORD, faddr, fdata64) != HAL_OK) 			
			{																									//如果出现错误
				HAL_FLASH_Lock(); 															//锁定FLASH
				return;
			}
		}
	}
	HAL_FLASH_Lock();
}
```